Check the listing for details. [ SparkFun COM-13952 ] Schmitt Trigger - CD40106B. Condition: New. Listed at 5.95 USD. Description: The CD40106BE consists of six Schmitt-trigger circuits. Each circuit functions as an inverter with Schmitt-trigger action on the input. The trigger switches at different points for positive- and negative-going signals. The difference between the positive-going voltage (VP) and the negative-going voltage (VN) is defined as hysteresis voltage (VH). Features: Schmitt trigger action with no external componentsHysteresis voltage typ. at 0.9V at VDD = 5V, 2.3V at VDD = 10V, and 3.5V at VDD = 15VNoise immunity greater than 50%No limit on input rise and fall timesStandardised, symmetrical output characteristics100% tested for quiescent current at 20sVMaximum input current of 1µA at 18 V over full package temperature range; 100nA at 18V and 25°CLow VDD to VSS current during slow input ramp